#include <iostream>
#include "java_fun.h"
#include <cstring>
#include <string>

int main() {
    long a=2;
    std::string int_s(sizeof(long), '0');
    std::memcpy(&int_s.at(0), &a, sizeof(long));
    std::cout<<int_s.length()<<std::endl;
    std::cout<<parse_long_fea(int_s)<<std::endl;
}